Glial cells make up approximately what percentage of the nervous system?
a. 50%
b. 75%
c. 90%
d. 10%
e. 60%
C
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Shortly after fertilization, successive cell divisions convert the zygote into a multicellular embryo
during a process known as a. meiosis. b. parthenogenesis. c. embryonic induction. d. cleavage. e. invagination.
Which of the following equations best summarizes photosynthesis?
A) 6 CO2 + 6 H2O + 6 O2 ? C6H12O6 B) 6 CO2 + 6 H2O ? C6H12O6 + 6 O2 C) 6 CO2 + 6 O2 ? C6H12O6 + 6 H2O D) C6H12O6 + 6 O2 ? 6 CO2 + 6 H2O
Which of the following lack a nucleus and are structurally simple?
A. Eukaryotes B. Prokaryotes C. Fungi D. Algae E. Protists
What is mycoprotein and of what value is it to humans?
A) It is a gasoline substitute and someday will be used as fuel. B) It is fungal protein used as a meat substitute. C) It is a fungal protein used as an antimicrobial drug. D) It is the root association of specialized bacteria and legumes. E) It is the top layer of foam found on fermenting beer.